SSD family comparison · Updated July 27, 2026 · Prices verified July 27, 2026

Samsung 9100 PRO vs WD_BLACK SN850X

Samsung 9100 PRO vs WD_BLACK SN850X at every capacity: prices, $/TB, speeds, endurance. Which to buy in July 2026 — full family comparison.

Verdict: Samsung 9100 PRO vs WD_BLACK SN850X

This page compares the Samsung 9100 PRO and WD_BLACK SN850X product families across all capacities we track. Per-capacity pricing changes the verdict more often than specs do, so start with the capacity table and then check the spec differences below.

On paper, the Samsung 9100 PRO family leads on sequential read (14,800 vs 7,300 MB/s). In practice, both saturate typical consumer workloads — the speed gap matters mainly for sustained multi-GB transfers.

Per-terabyte economics favor the WD_BLACK SN850X: $133.75/TB at its best capacity, against $200.00/TB for the Samsung 9100 PRO. If budget drives the decision, the WD_BLACK SN850X is the default.

Samsung 9100 PRO vs WD_BLACK SN850X: price by capacity

Capacity	Samsung 9100 PRO	WD_BLACK SN850X
1 TB	$249 · $249.00/TB	$220 · $220.00/TB	Full comparison →
2 TB	$400 · $200.00/TB	$348 · $174.00/TB	Full comparison →
4 TB	$898 · $224.50/TB	$535 · $133.75/TB	Full comparison →
8 TB	$2000 · $250.00/TB	$1300 · $162.50/TB	Full comparison →

Spec comparison (8 TB models)

Generation

Gen 5

Gen 4

Interface

PCIe 5.0 x4

PCIe 4.0 x4

Sequential read

14,800 MB/s

7,300 MB/s

Sequential write

13,400 MB/s

6,600 MB/s

Controller

Samsung Presto

WD G2

DRAM cache

Yes

Warranty

5 years

PS5 compatible

Yes

FAQ

Samsung 9100 PRO vs WD_BLACK SN850X — common questions

Which is cheaper per TB, Samsung 9100 PRO or WD_BLACK SN850X?

As of July 27, 2026, the WD_BLACK SN850X family offers the better $/TB: its best configuration is $133.75/TB versus $200.00/TB for the Samsung 9100 PRO. The exact winner varies by capacity — see the capacity table for per-size pricing.

Which capacity of the Samsung 9100 PRO or WD_BLACK SN850X should I buy?

2 TB is the sweet spot for most builds: better $/TB than 1 TB and better availability than 4 TB+ during the 2026 NAND shortage. Check the capacity table above — the per-TB winner can flip between capacities.

Are the Samsung 9100 PRO and WD_BLACK SN850X PS5 compatible?

Both families are PCIe NVMe M.2 2280 and work in the PS5 expansion slot. The PS5 caps sustained speeds at ~5,500 MB/s, so pick on price, not peak speed, and add a heatsink.